Have you already used pre-defined roles in Ansible for automation?

Yes, pre-defined roles in Ansible significantly simplify automation of configurations, allowing tasks to be reused and structured. For example, you can use a role to install and configure a web server, where all necessary tasks, templates, and variables are already organized. This improves code readability and maintainability.

Example of using a role:

- hosts: webservers
  roles:
    - nginx

Here, the nginx role contains all the steps for installing and configuring Nginx, saving time and reducing the likelihood of errors.